/*******************************************************************************
 * Copyright (c) 2004, 2005 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

package com.architexa.org.eclipse.gef.commands;

/**
 * A listener interface for receiving notification before and after commands are executed,
 * undone, or redone.
 * @since 3.1
 */
public interface CommandStackEventListener {

/**
 * Sent when an event occurs on the command stack.  {@link CommandStackEvent#getDetail()}
 * can be used to identify the type of event which has occurred.
 * @since 3.1
 * @param event the event
 */
void stackChanged(CommandStackEvent event);

}
